(Photo courtesy of the SFMTA)

Following a six-week assessment of San Francisco’s Central Subway project, the San Francisco Municipal Transportation Agency on Sept. 17  announced a new completion date.

The assessment looked at, among other things, the project’s remaining construction, system integration and testing, and determined the subway could be completed sometime in the summer of 2021.

“The Central Subway will transform how public transportation serves some of the city’s most densely populated communities,” interim SFMTA director of transportation Tom Maguire said in a statement.

“In the meantime, we continue to reach milestones with the project such as the reopening of lower Stockton Street in Union Square, which happened this spring and moving construction off the streets along Stockton Street in Chinatown last month,” he said.

Central Subway program director Nadeem Tahir said part of the reason the completion date has been moved forward from the original projection of 2019 was due to the difficult construction technique being used and modifications to design improvements, as well as a complete redesign of the future Chinatown station.

“For a project of this magnitude and complexity, it is not unusual to expect a change in a project’s timeline,” Tahir said.

“What’s most important is that we deliver four new stations and a subway tunnel that operates safely and reliably for Muni customers.”

The Central Subway project, which will take passengers from the South of Market neighborhood to Chinatown, broke ground in 2012.